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Part Number: DLPC3439
We got an external CPU connected with DLPC3439 by I2C bus, and need to on-line update the image in the SPI FLASH chip that attached on DLPC3439 with external CPU program.
The CPU program sent order to DLPC3439 by I2C bus, and then the DLPC3439 read/write/erase the SPI FLASH chip.
We could read and erase the SPI flash successfully, while encountered problem when write the SPI FLASH chip.
Following is the step:
1. Command "0xDE" set flash type，we choose "Entire Flash"
2. Command "0xDD" , pre check
3. Command "0xDF" ,set flash data length
4. Command "0xE1" , write start
5. Command "0xDF", set flash data length
6. Command "0xE2", write continue
Then repeat step 5 and step 6.
We found command 0xE1 could write the data in flash successfully, but command 0xE2 failed，the data in flash is still 0xFF after writing.
Is there anyone can help on this? Thanks.
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